Horticulture Diagnostic Lab

Horticulture Diagnostic Lab:

The Horticulture Diagnostic Lab, run by Master Gardener volunteers, can identify plants and insects, as well as diagnose plant diseases or damage caused by insects. Samples are accepted by appointment only to ensure freshness. Call 845-677-8223 or email fk232@cornell.edu to set up a drop-off time. Diagnostic results take up to 7-10 business days.

Sample Collection:

• Submit all parts of the plant if possible.
• Wrap the sample loosely in a sealed plastic bag.
• Pack roots separately from branches, shoots, or foliage.
• Collect samples before pesticide application for accurate diagnosis.
• Take samples from areas with early symptoms.

Fees:

• Insect or Plant identification: $20.00 per sample
• Diagnose plant damage/disease: $20.00 per sample
• Soil testing pH only: $15.00 per sample

All samples must include the submission form and payment for analysis. Click the button to download your form:

We cannot not process samples until we have received payment in full. We accept Cash, Check and Credit Cards.

Horticulture Hotline:

Please Note: The Hotline/Lab will be closed on the following dates this summer: June 19, August 7 and August 21, 2024

Our Master Gardeners also operate our Horticulture Hotline, (845) 677-5067 which is open from April through September on Wednesdays from 9 am to 12 pm, during inclement weather and travel restrictions it may not be staffed.

Click here for general tips on identifying plant diseases.  These tips will help you gather the information needed before calling our hotline or emailing in with questions.

Ask Extension:

Written questions can also be submitted at ask2.extension.org. Look for the Ask a New Question button, then select New York from the dropdown menu, and then finally select the county closest to you. If a photograph is included, please ensure it is focused and as close up as possible. These questions will be answered by our Master Gardener volunteers, please allow 7-10 days for a response.

You can also submit emails/questions here:

Cornell Diagnostic Services:

More information can also be found at Cornell University Diagnostic Services:

• Cornell University Insect Diagnostic Laboratory
• Cornell University Plant Disease Diagnostic Clinic

Gardening Information:

• Visit the Cornell Garden Based Learning Website to learn more about vegetables, fruits, lawns, trees, shrubs, houseplants, soil, composting and pests.
• New York State Integrated Pest Management for Communities for structural and garden pests.
• Websites for Gardeners  - many topics, including bees, nuisance wildlife, mushrooms, invasive plants, certified arborists and weed ID. 

For more information on our diagnostic services, dropping off samples or soil testing, please email or call Francheska Kuilan at fk232@cornell.edu or 845-677-8223 x115.

Last updated July 31, 2024